Bug 1546280 (CVE-2018-7050)

Summary:	CVE-2018-7050 irssi: Null pointer dereference when an "empty" nick joins a channel
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	huzaifas, jskarvad, rschiron
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	irssi 1.0.7, irssi 1.1.1	Doc Type:	If docs needed, set a value
Doc Text:	A NULL pointer dereference was found in Irssi when an "empty" nick joins a channel. A remote attacker, who can control an IRC server, could crash IRC clients by leveraging this vulnerability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:40:14 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1546315, 1563159, 1563161, 1563162
Bug Blocks:	1546283

Description Laura Pardo 2018-02-16 19:27:58 UTC

A NULL pointer dereference was found in Irssi in complete_from_nicklist function
of chat-completion.c file, when an "empty" nick joins a channel. A remote
attacker, who can control an IRC server, could crash IRC clients by leveraging
this vulnerability.

Upstream patch:
https://github.com/irssi/irssi/commit/36564717c9f701e3a339da362ab46d220d27e0c1

References:
https://irssi.org/security/irssi_sa_2018_02.txt

Comment 1 Laura Pardo 2018-02-16 20:12:06 UTC

Created irssi tracking bugs for this issue:

Affects: fedora-all [bug 1546315]